My Sonos experience has been fine eight years now 10+ devices. That said I do dislike the new app rollout. I do feel like there has been 500ms to 2 seconds of added lag in certain actions. I can't quite place what's going on though. Not enough to be a deal breaker yet. I feel the surround sound experience has been very hit or miss but can't tell if it's Sonos or the media platform I'm watching videos on.
Originally they said the feature was totally supported but just didn't make the cut for the initial app release. I've heard that story before, including from my own PMs. Can't say I'm too surprised that the feature still isn't supported and I've yet to see any further mention of adding it back.